docs: def _check_docstring_quotes(self, quote_record):
          """Check if the docstring quote from tokenization is valid.
  
          Args:
              quote_record: a tuple containing the info about the string
                  from tokenization, giving the (token, quote, row number).
          """
          _, triple, row, col = quote_record
          if triple != TRIPLE_QUOTE_OPTS.get(self.config.docstring_quote):
              self._invalid_docstring_quote(triple, row, col)